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Dear Ed, Thank you very much for your reply. Yes you are correct. It is C276. I also suspects that the temp not enough during annealing. Do you have any reference source about the requirement of 1200 deg C? And again, do you think hardness test is proper enough for making sure the quality...

Dear All, I have some questions related to subject above. The background, pipe material which did a solution annealing got a crack after one year operation. Solution annealing conducted by heated up to 1120 deg C and holding until 30 mins. Then rapid quenching using water Microstructure test in...

Dear All, We are in the study to replace our 250W sodium lamps with LED type. The concern is, since those sodium lamps installed inside our product warehouse, the anti bugs/insect type is highly required. Is there any LED light which meet the requirement of anti bugs/insect? What is the...

Dear Ed, Sorry for not complete explain about the problem. This is the case of Ti tube. Damaged not coming from erosion corrosion inside the tube, but in outside tube due to vibration Baffle is carbon steel. Inspect for the other exchanger with same characteristic, baffle is heavy corroded So...

Dear Daniel and Walt, Thank you very much for your reply. Looking at the link which you are given, it is quite interesting. The problem is, heat exchanger now in service which not possible to install the sensor and others. I am interesting about detection of damping, amplitude and natural...

Dear All, Are there any method to inspect the tube of heat exchanger correlation of thickness loss? Right now, inspection done by ECT during offline. Considering plant availability, studying about if any method to determine the thickness loss of tube during heat exchanger in service Thank you